1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath5k/mac80211-ops.c b/drivers/net/wireless/ath/ath5k/mac80211-ops.c
index 6ed4c0717e3e..af4c7ecb4b30 100644
--- a/drivers/net/wireless/ath/ath5k/mac80211-ops.c
+++ b/drivers/net/wireless/ath/ath5k/mac80211-ops.c
@@ -483,6 +483,14 @@ ath5k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
         if (ath5k_modparam_nohwcrypt)
                 return -EOPNOTSUPP;
 
+        if (vif->type == NL80211_IFTYPE_ADHOC &&
+            (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
+             key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
+            !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
+                /* don't program group keys when using IBSS_RSN */
+                return -EOPNOTSUPP;
+        }
+
         switch (key->cipher) {
         case WLAN_CIPHER_SUITE_WEP40:
         case WLAN_CIPHER_SUITE_WEP104: